bin/45200: Scp hangs after sending

[hannken%eis.cs.tu-bs.de@localhost]

>Number:         45200
>Category:       bin
>Synopsis:       Scp hangs after sending
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Aug 01 11:25:00 +0000 2011
>Originator:     J. Hannken-Illjes
>Release:        NetBSD 5.99.55
>Organization:
>Environment:
NetBSD 5.99.55 (work.i386) #38: Mon Aug 1 10:38:23 MEST 2011
>Description:
Resent to replace bad pending/45199! 

Running scp hangs after the data is transferred. Output from

scp:    debug2: channel 0: written 263 to efd 8
        debug2: tcpwinsz: 33580 for connection: 5
        debug2: tcpwinsz: 33580 for connection: 5
        debug2: tcpwinsz: 33580 for connection: 5
        Sending file modes: C0644 200 x0x
        debug2: tcpwinsz: 33580 for connection: 5
        debug2: tcpwinsz: 33580 for connection: 5
        debug2: channel 0: rcvd ext data 20
        debug2: tcpwinsz: 33580 for connection: 5
        Sink: C0644 200 x0x
        debug2: channel 0: written 20 to efd 8
        debug2: tcpwinsz: 33580 for connection: 5
        debug2: tcpwinsz: 33580 for connection: 5
        x0x                        100%  200     0.2KB/s   0.2KB/s   00:00    
        debug2: tcpwinsz: 33580 for connection: 5
        debug2: tcpwinsz: 33580 for connection: 5

sshd:   debug1: session_by_channel: session 0 channel 0
        debug1: session_input_channel_req: session 0 req exec
        debug2: fd 3 setting TCP_NODELAY
        debug3: packet_set_tos: set IP_TOS 0x08
        debug2: fd 10 setting O_NONBLOCK
        debug2: fd 9 setting O_NONBLOCK
        debug2: fd 12 setting O_NONBLOCK
        debug2: tcpwinsz: 33580 for connection: 3
        debug2: channel 0: read 263 from efd 12
        debug2: channel 0: rwin 2097152 elen 263 euse 1
        debug2: channel 0: sent ext data 263
        debug2: channel 0: read 20 from efd 12
        debug2: channel 0: rwin 2096888 elen 20 euse 1
        debug2: channel 0: sent ext data 20
>How-To-Repeat:
Use scp.
>Fix: